EP1172754B1 - Méthode de communication pour carte à puce - Google Patents

Méthode de communication pour carte à puce Download PDF

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Publication number
EP1172754B1
EP1172754B1 EP01116057A EP01116057A EP1172754B1 EP 1172754 B1 EP1172754 B1 EP 1172754B1 EP 01116057 A EP01116057 A EP 01116057A EP 01116057 A EP01116057 A EP 01116057A EP 1172754 B1 EP1172754 B1 EP 1172754B1
Authority
EP
European Patent Office
Prior art keywords
card
data
integrated circuit
circuit card
writer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP01116057A
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German (de)
English (en)
Other versions
EP1172754A1 (fr
Inventor
Katsuyuki Tanaka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Corp
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Sony Corp
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Filing date
Publication date
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Publication of EP1172754A1 publication Critical patent/EP1172754A1/fr
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
    • G06K7/10019—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves resolving collision on the communication channels between simultaneously or concurrently interrogated record carriers.
    • G06K7/10029—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves resolving collision on the communication channels between simultaneously or concurrently interrogated record carriers. the collision being resolved in the time domain, e.g. using binary tree search or RFID responses allocated to a random time slot
    • G06K7/10039—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves resolving collision on the communication channels between simultaneously or concurrently interrogated record carriers. the collision being resolved in the time domain, e.g. using binary tree search or RFID responses allocated to a random time slot interrogator driven, i.e. synchronous
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K1/00—Methods or arrangements for marking the record carrier in digital fashion
    • G06K1/14—Methods or arrangements for marking the record carrier in digital fashion by transferring data from a similar or dissimilar record carrier
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/0723—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/0008—General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer

Definitions

  • the present invention relates generally to an IC card data communication method. Especially, the present invention is applicable to IC cards of non-contact type.
  • FIG. 6 there is shown a schematic diagram illustrating a relationship between an IC card and a reader/writer.
  • An IC card 1 is constituted by a wiring board on which a loop antenna 2 and an integrated circuit 3 are arranged and a sheet material such as plastics, which are laminated into a sheet. With the IC card 1, the integrated circuit 3 is operated by a high-frequency signal power induced on the loop antenna 2, thereby transferring various data with a reader/writer 5 via the loop antenna 2.
  • a loop antenna 6 is driven by a predetermined driver circuit and, when the IC card 1 comes on, a high-frequency signal is induced on its loop antenna 2, thereby starting the operation of the IC card 1. Also the reader/writer 5 is adapted to transfer commands and data with the IC card 1 by switching the driving of the loop antenna 6 by a modulation/demodulation circuit 7 and processing the high-frequency signal obtained by the loop antenna 6 under the control of a DPU (Digital Processing Unit) 8.
  • DPU Digital Processing Unit
  • a signal generation circuit 9 in the reader/writer 5 generates a high-frequency signal of 13.56 MHz for example under the control of the DPU 8 and drives the loop antenna 6 with this signal.
  • the DPU 8 instructs the signal generation circuit 9 to start its operation in response to a request from a host device, outputs various data to be sent to the IC card 1 to the modulation/demodulation circuit 7, and captures various data received at the modulation/demodulation circuit 7.
  • the DPU 8 executes the processing such as mutual-authentication with the IC card 1, records data received from the host device to the IC card 1, and reads data recorded to the IC card 1 to output the data to the host device.
  • the modulation/demodulation circuit 7 modulates the output data of the DPU 8, varies the terminal impedance of the antenna 6 on the basis of the modulation result, and thereby sends the modulated output data to the IC card 1. Also, the modulation/demodulation circuit 7 processes the high-frequency signal at the loop antenna 6 with the terminal impedance of the loop antenna 6 kept to a constant value, thereby detecting an impedance variation at the loop antenna 2 of the IC card 1 coupled to the loop antenna 6. The modulation/demodulation circuit 7 receives the data sent from the IC card 1 and outputs the received data to the DPU 8.
  • the high-frequency signal induced on the loop antenna 2 is detected by low-pass filter formed by a diode 11, a resistor 12, and a capacitor 13 incorporated in the integrated circuit 3.
  • a power supply circuit 14 rectifies the received detected high-frequency signal and stabilizes the rectified signal to generate an operating power supply.
  • the modulation/demodulation circuit 15 receives the detection result via a high-pass filter formed by a capacitor 16 and a resistor 17 and processes the received detection result to demodulate the data transmitted by the reader/writer 5. Further, the modulation/demodulation circuit 15 modulates output data from a sequencer 19 under the control thereof, thereby controlling the on/off of a field-effect transistor FET on the basis of the modulation result. The on/off control causes the FET to ground load Z connected to the anode of the diode 11. Consequently, in the IC card 1, the terminal impedance of the loop antenna 2 coupled with the loop antenna 6 of the reader/writer 5 is switched, transmitting various data to the reader/writer 5.
  • the sequencer 19 starts operating on the power supplied from the power supply circuit 14 to output various data to the modulation/demodulation circuit 15 in accordance with the data supplied from the reader/writer 5 detected by the modulation/demodulation circuit 15. Consequently, the IC card 1 approaches the reader/writer 5 and starts operating. Detecting a polling from the reader/writer 5, the IC card 1 executes processing such as mutual-authentication. After a series of these operations, the sequencer 19 accesses a memory 20 in accordance with the data supplied from the modulation/demodulation circuit 15 to update the contents of the memory 20 and output the updated data to the modulation/demodulation circuit 15.
  • the system based on the IC card 1 is available as a room access control means by storing the personal information of each user into his IC card 1 and as a credit card by recording purchase log information for example about various commercial articles to the IC card 1.
  • IC cards As entrance tickets for various event places.
  • the purchase of an entrance ticket for an event place is recorded on the IC card by online access for example before entering the event. Therefore, the organizer of the event can easily and surely manage the entries by checking the recording of their IC cards at the entrance of the event place. This also allows the users to purchase desired entrance tickets from remote places.
  • tickets which are issued in paper may be purchased in bulk for distribution. If the IC cards used as entrance tickets are purchased in bulk, it is possible that the entrance tickets purchased in bulk are recorded in one IC card. If this happens, the record in such an IC card must be copied to other IC cards to distribute the entrance tickets.
  • the IC card may be periodically updated to a new one. If the IC card is updated, the information such as purchase log recorded to this IC card must be all copied -to a new IC card and as securely as possible.
  • EP 0 878 891 teaches a power transmission/communication system for transmitting power from a reader and/or writer to an IC card by an electromagnetic wave and performing transmission or transmission and reception of a communication signal between the reader and/or writer and the IC card by an electromagnetic wave, wherein the intensity of a magnetic field induced by the electromagnetic wave outputted from the reader and/or writer, i.e., the magnitude of power induced thereby and the time required to transmit the power are controlled.
  • the present invention is intended to directly exchange data between IC cards by use of the coupling between the antennas of the IC cards via the antenna of a reader/writer, thereby securely copying the contents of one IC card onto another IC card.
  • the object of the invention is achieved by the method of claim 1.
  • FIG. 1 there is shown a block diagram illustrating an IC card system practiced as a first embodiment of the invention.
  • a reader/writer 23 is configured in the same manner as the related-art reader/writer 5 described before with reference to FIGS. 6 and 7.
  • An IC card 24A and an IC card 24B are configured in generally the same manner as the IC card 1 described before with reference to FIGS. 6 and 7 except for the data stored in a memory 20A and a memory 20B.
  • the IC card 24A is loaded alone in the reader/writer 5 as described with reference to FIG. 6 and a predetermined application program of a personal computer, which is a host unit of the IC card system is executed to store the purchase record about the entrance ticket for an event desired by the user into the memory 20A. Consequently, the user can carry IC card 24A and pass an entrance gate arranged with a reader/writer to the event like passing a ticket barrier in a railway station.
  • the IC card 24A stores data for identifying the event, data for identifying the seat if the event is a music concert for example, and data for identifying the purchase action such as a purchase number along with data for providing security by the data unique to these data. If a plurality of tickets have been purchased in bulk, these data are recorded for each of the purchased tickets as purchase records and, in addition to these data, data about the number of tickets purchased is recorded.
  • the IC card 24A is added with processing-restricting data, as an entrance ticket purchase record, indicative that all of the above-mentioned data are readable only for direct data transfer between IC cards, that is, the reader/writer 5 may only browse the data for identifying the event and seat and the number of purchased tickets but cannot read the security data.
  • the IC cards 24A and 24B store, in their memories 20A and 20B in a protected manner, commands and their sequences for transferring data having processing-restricting data to the IC card 24B. Moreover, the IC cards 24A and 24B allocate codes, for commands used for these sequences, different from those for commands transferred with the reader/writer 23, thereby preventing the reader/writer 23 from knowing the sequence of processes being made between the cards.
  • a predetermined application program for making the tickets bulk purchased by the IC card 24A be available in the IC card 24B is started in a personal computer 22
  • the user is prompted on a display screen of the personal computer 22 to load the IC card 24A in a predetermined position of the reader/writer 23 and the personal computer 22 issues a start command to the reader/writer 23.
  • the reader/writer 23 starts the loop antenna 6 by high-frequency signal, which starts the operation of the IC card 24A when the IC card 24A is placed near the reader/writer 23.
  • the reader/writer 23 issues a polling to the IC card 24A.
  • the reader/writer 23 performs mutual-authentication with the IC card 24A.
  • mutual-authentication is completed, the reader/writer 23 sends a read command for reading the ticket-associated data to the IC card 24A under the control of the personal computer 22.
  • the IC card 24A reads from its memory 20A the data for identifying the object to be transferred by the user (namely, the data for identifying the event and the seat) and returns the data to the reader/writer 23 except the security data.
  • the reader/writer 23 passes the data received from the IC card 24A to the personal computer 22, thereby allowing the user to actually identify the entrance tickets to be transferred to the IC card 24B on the display screen of the personal computer 22 in the IC card system 21.
  • the personal computer 22 executes the above-mentioned application program to prompt the user to load the IC card 24B into the reader/writer 23.
  • the personal computer 22 instructs the user to load the IC card 24B such that it overlaps the IC card 24A. Consequently, in the IC card system 21, the loop antenna 6 of the reader/writer 23 and the loop antennas 2A and 2B of the IC cards 24A and 24B are interconnected, upon which both IC cards 24A and 24B are operated by electric power supplied from the reader/writer 23. Further, as shown in FIG. 3, when the terminal impedance is switched in any one of the loop antennas 6, 2A, and 2B, the switching is detected by the other devices.
  • FIG. 3 shows transmission results (A1), (B1), and (C1) of each of the reader/writer 23, and the IC cards 24A and 24B and reception results (A2), (B2), and (C2) of the outputs of the modulation/demodulation circuits 7, 15A, and 15B.
  • period T1 terminal impedance switching is stopped in the reader/writer 23 and the IC card 24B and terminal impedance is switched in the IC card 24A.
  • the reader/writer 23 and the IC card 24B can receive data.
  • terminal impedance switching is stopped in the reader/writer 23 and the IC card 24A and terminal impedance is switched in the IC card 24B.
  • these periods T1 and T2 are used to transfer entrance ticket data from the IC card 24A to the IC card 24B and return processing responses from the IC card 24B to the IC card 24A.
  • the personal computer 22 instructs the reader/writer 23 to recognize the IC card 24B.
  • the reader/writer 23 newly issues a polling and, when a response comes from the IC card 24B, performs mutual-authentication and then checks the contents of the memory 20B in the IC card 24B (steps SP7 through SP12 in FIG. 2).
  • the personal computer 22 instructs the IC card 24A to transfer the entrance ticket specified by the user in step SP13.
  • the IC card 24A executes a corresponding sequence stored in the memory 20A to issue a polling to the IC card 24B and receive a response therefor (steps SP14 and SP15), and execute mutual-authentication with the IC card 24B (steps SP16 and SP17). Further, the IC card 24A instructs the IC card 24B to write all or part of the purchase record data specified by the personal computer 22 to the memory 20B of the IC card 24B (steps SP18 and SP19). In response, the IC card 24A updates the contents of its memory 20A.
  • the event data are recorded in the memory 20A in an amount equivalent to the number of purchased tickets
  • the data including the security data for the number of tickets specified by the user are transferred to the memory 20B of the IC card 24B.
  • the transferred data are deleted from the memory 20A of the IC card 24A.
  • the number of purchased tickets is recorded by recording the data in an amount equivalent to the number of purchased tickets
  • the same data recorded in the memory 20A is recorded in the memory 20B according to the record of the number of tickets specified by the user and the contents of the memory 20A are updated so as to decrement the number of purchased tickets. It should be noted that, if all of purchased tickets stored in the IC card 24A are transferred to the IC card 24B, only the record is kept recorded in the IC card 24A.
  • the data is transferred from the IC card 24A to the IC card 24B in the same data format including the processing-restricting data. This allows the IC card system 21 to further transfer the transferred entrance tickets between the IC card 24B and another IC card and prevent the reader/writer 23 from updating the contents of the IC card 24B.
  • the memory 20A and the memory 20B store commands and their sequences for copying, moving, dividing, connecting, and comparing the data between the IC cards.
  • the IC card 24A reports a processing result to the reader/writer 23, by which the user can check the processing result.
  • the IC card system 21 accesses an entrance ticket sales center for example through the personal computer 22 with the IC card 24A loaded in the reader/writer 23 and performs a sequence of processes to purchase the entrance ticket of a desired event to store the purchase record into the memory 20A of the IC card 24A.
  • the IC card system 21 checks the IC card 24A by the reader/writer arranged at the entrance of the event place to see if the holder of the IC card 24A is an authorized user having a right for entering the event place, thereby permitting or prohibiting the entry into the event place.
  • the IC card system 21 when recording the entrance ticket into the IC card 24A, the IC card system 21 also records the security data aside from the data identifying the event place, for example, and sets the processing restricting data, thereby allowing the reader/writer 23 to read only the data for identifying the event place for example except the security data. Consequently, if the reader/writer 23 at the entry for the event place attempts to read the entrance ticket purchase record and to record the same into another IC card, the IC card system 21 can prevent unauthorized actions by the security data.
  • the reader/writer 23 is allowed to read only the data for identifying the event place for example, which allows the user to check the ticket purchased by use of the reader/writer 23, thereby executing ticket transfer to any third party in an authorized manner.
  • the data about the event place and seat for example are read and displayed by the reader/writer 23 from the IC card 24A by the execution of the application program of the personal computer 22, thereby allowing the user to accept the contents of the entrance ticket to be transferred to the IC card 24B. Further, when the user accepts the contents of the ticket, the user is instructed to load the IC cards 24A and 24B in an overlapped manner. In this state, the IC cards 24A and 24B are thus loaded and operated by the high-frequency signal supplied from the loop antenna 6 of the reader/writer 23, transferring the data not only between the IC cards and the reader/writer 23 but also between the IC cards themselves.
  • the reader/writer 23 instructs the IC card 24A which is the entrance ticket recording side to transfer the ticket specified by the user.
  • the IC card 24A which is the entrance ticket recording side to transfer the ticket specified by the user.
  • all or part of the entrance ticket purchase record is transferred from the IC card 24A to the IC card 25B in accordance with the sequence recorded in the IC card 24A. Consequently, the IC card system 21 allows the user having the IC card 24B to enter the event place.
  • the IC card system 21 transfers the record from the IC card 24A to the IC card 24B by the sequence recorded in the IC card 24A as instructed by the reader/writer 23 or executes a sequence of processes by the commands unique to the data communication between the IC cards 24A and 24B and unrecognizable by the reader/writer 23, thereby preventing the reader/writer 23 from intervening this sequence of processes. Consequently, the data of this type can be transferred with security and stored in the IC cards 24A and 24B.
  • the present embodiment can perform easy and secure data transfer between the IC cards.
  • the antenna of the reader/writer and the antennas of the IC cards 24A and 24B which are operated by the electric power supplied by the reader/writer 23 are coupled each other to transfer data directly between the IC cards 24A and 24B, realizing secure data transfer between the IC cards.
  • the processing restricting data which is a predetermined identification code
  • the data transfer with the IC card 24B in accordance with the sequence stored in memory minimizes the intervention by the reader/writer, thereby providing secure data transfer between the IC cards.
  • the data transfer between the IC cards is encrypted on the basis of mutual-authentication and the data transfer between the IC cards is executed by use of the commands different from those used for the data transfer with the reader/writer, thereby realizing the data transfer between the IC cards more securely.
  • the IC card system is used to update credit cards.
  • the IC card system is configured in generally the same manner as the IC card system 21 of the first embodiment except the contents of data stored in IC cards. Therefore, the second embodiment will be described by use of the configuration shown in FIG. 1.
  • the IC card 24A is a credit card conventionally used by the user, recording a commercial product purchase record.
  • the IC card 24A is adapted to record the contents of the memory 20A so as to use the IC card 24A as electronic money and a membership card for example under contract with the credit card company.
  • the contents of the memory 20A associated with these different kinds of services are each encrypted by a key unique to each service provider.
  • the IC card 24B is a card newly issued to the user of the IC card 24A, extending the expiration date of the IC card 24A.
  • the data indicative of expiration date is stored in the memory 20A and the memory 20B of the IC cards 24A and 24B.
  • data for identifying the IC card 24A to be updated is stored in the memory 20B.
  • the IC card 24B records in its memory 20B a predetermined processing procedure for automatically starting a predetermined sequence upon the starting of the IC card 24B.
  • the personal computer 22 displays an operational procedure on the display screen and controls the reader/writer 23 to start sending the high-frequency signal from the antenna 6 of the reader/writer 23. Consequently, when the IC cards 24A and 24B are put close to the reader/writer 23, these IC cards start operating, the IC card 24B starting the sequence stored in its memory.
  • the reader/writer 23 issues a polling to the IC card 24A for mutual-authentication. Then, the reader/writer 23 determines whether the IC card 24A is to be updated or not. If the IC card 24A is to be updated, the reader/writer 23 sequentially reads the contents from the memory 20A and write them into the memory 20B at corresponding memory locations. When the recording has been completed, the IC card 24A becomes unusable because of the update. The sequence which has executed the above-mentioned processes will not start again.
  • the IC card 24A after mutual-authentication with the reader/writer 23 as required, reports the completion of the processing to the reader/writer 23.
  • Execution of the sequence recorded in the destination side of data transfer can also perform data transfer in security between IC cards as with the second embodiment.
  • the IC card system is used to transfer an entrance ticket record from the IC card 24A to the IC card 24B as with the first embodiment.
  • the IC card is configured in generally the same manner as the IC card system 21 of the first embodiment except the processing by the personal computer 22 and the contents recorded to the IC cards. Therefore, the third embodiment will be described by use of the configuration shown in FIG. 1.
  • the IC card 24A or 24B in response to a command issued from the reader/writer 23, transfers commands unique to the data transfer between IC cards, thereby transferring data directly between the IC cards 24A and 24B in accordance with the sequence of the application program executed in the personal computer 22 to transfer data between the memory 20A and the memory 20B.
  • the data transfer directly between the IC cards 24A and 24B for exchanging the contents of the memories by the processing executed by the sequence of the host unit can also provide the same effects as those of the first embodiment.
  • the data recorded to the IC card 24A by the application program can be transferred to the IC card 24B after processing by the IC card 24A in a complex manner. This allows the third embodiment to be widely applied to the creation of child cards by partially limiting the capabilities of the parent card, for example.
  • the IC cards are loaded in the reader/writer in an overlapped manner.
  • the present invention is also applicable to an arrangement shown in FIG. 4 in which the IC cards 24A and 24B are arranged side by side relative to a large loop antenna of the reader/writer, therein electromagnetically coupling the antennas of the IC cards 24A and 24B; and an arrangement shown in FIG. 5 in which the IC cards 24A and 24B are arranged side by side relative to a loop antenna of the reader/writer which has a form of two same shaped antennas connected to each other, therein electromagnetically coupling the antennas of the IC cards 24A and 24B, for example.
  • the present invention is widely applicable to any arrangements in which the antennas of the IC cards between which data is transferred are electromagnetically coupled via a power supply antenna.
  • the contents of one IC card are transferred to another and the transferred contents are deleted from the source card or made unusable therein.
  • the present invention is also applicable to an arrangement in which the contents of one card may only be copied to another, retaining the transferred contents in the source card.
  • the present invention is applied to an arrangement in which an entrance ticket record or a credit card record is transferred.
  • the present invention is also applicable to any arrangement in which the contents of one IC card are copied to another.
  • data recorded to a plurality of IC cards are transferred via the reader/writer. If only the data transmission is executed, any device having an antenna which electromagnetically couples with each IC card may be used rather than the above-mentioned IC card reader/writer.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Artificial Intelligence (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • General Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Credit Cards Or The Like (AREA)
  • Devices For Checking Fares Or Tickets At Control Points (AREA)
  • Near-Field Transmission Systems (AREA)

Claims (14)

  1. Procédé de communication de données pour communiquer des données entre une première carte à circuit intégré (24A) qui comporte une première antenne (2A) et une première mémoire (20A) et une seconde carte à circuit intégré (24B) qui comporte une seconde antenne (2B) et une seconde mémoire (20B), où ladite première antenne est couplée de façon magnétique avec ladite seconde antenne pour transmettre des données depuis ladite première mémoire sur ladite seconde mémoire, caractérisé en ce que ladite première antenne est couplée de façon magnétique avec ladite seconde antenne par l'intermédiaire d'un dispositif (23) qui comporte une antenne (6) et ladite transmission est réalisée en envoyant de façon séquentielle des commandes pour commander une communication depuis ledit dispositif jusqu'à ladite première carte à circuit intégré et ladite seconde carte à circuit intégré et dans lequel ladite transmission de données depuis ladite première mémoire de ladite première carte à circuit intégré jusqu'à ladite seconde mémoire de ladite seconde carte à circuit intégré est réalisée en transmettant lesdites données depuis ladite première antenne directement sur ladite seconde antenne sans que ledit dispositif ne lise lesdites données.
  2. Procédé de communication de données selon la revendication 1, dans lequel ledit dispositif est un dispositif de lecture/écriture permettant de lire/écrire des données sur ladite première carte à circuit intégré et sur ladite seconde carte à circuit intégré.
  3. Procédé de communication de données selon la revendication 2, dans lequel ledit dispositif de lecture/écriture est adapté pour transférer des données qui sont stockées dedans sur un ordinateur (22).
  4. Procédé de communication de données selon la revendication 1, dans lequel ladite transmission est réalisée avec ladite première carte à circuit intégré, ladite seconde carte à circuit intégré et ledit dispositif comportant les antennes qui sont interconnectées de façon magnétique.
  5. Procédé de communication de données selon la revendication 1, dans lequel lesdites données comportent des données auxquelles est lié un code d'identification prédéterminé, lequel ignore une commande d'accès délivrée depuis ledit dispositif.
  6. Procédé de communication de données selon la revendication 1, dans lequel ladite transmission est réalisée au moyen d'une commande qui est nécessaire pour une transmission de données comme stocké dans ladite première mémoire.
  7. Procédé de communication de données selon la revendication 1, dans lequel ladite transmission est démarrée lorsqu'une puissance électrique est appliquée depuis ledit dispositif sur ladite première carte à circuit intégré et sur ladite seconde carte à circuit intégré.
  8. Procédé de communication de données selon la revendication 1, dans lequel ladite transmission est démarrée lorsqu'une commande de début de communication (SP13) est délivrée depuis ledit dispositif sur ladite première carte à circuit intégré.
  9. Procédé de communication de données selon la revendication 1, dans lequel ladite transmission est réalisée lorsqu'un signal modulé est envoyé depuis ladite première carte à circuit intégré jusqu'à ladite seconde carte à circuit intégré en modulant un signal de porteuse en commutant une résistance qui est connectée à un circuit d'accord de ladite première carte à circuit intégré.
  10. Procédé de communication de données selon la revendication 9, dans lequel ledit circuit d'accord est constitué par un condensateur (13A) qui est connecté à ladite première antenne en parallèle à l'accord de ladite première antenne selon une fréquence d'une onde électromagnétique qui est irradiée depuis ledit dispositif.
  11. Procédé de communication de données selon la revendication 1, dans lequel ladite transmission est réalisée en commutant une impédance de borne de ladite antenne dudit dispositif.
  12. Procédé de communication de données selon la revendication 2, dans lequel ladite transmission est réalisée en appliquant sur ladite première carte à circuit intégré et sur ladite seconde carte à circuit intégré une puissance électrique qui est générée au moyen d'une onde électromagnétique qui est irradiée depuis l'antenne interne dudit dispositif de lecture/écriture.
  13. Procédé de communication de données selon la revendication 2, dans lequel ladite transmission comprend les étapes consistant à réaliser une authentification mutuelle (SP3) entre ladite première carte à circuit intégré et ledit dispositif de lecture/écriture ; à réaliser une authentification mutuelle (SP9) entre ladite seconde carte à circuit intégré et ledit dispositif de lecture/écriture ; à envoyer une commande de transfert de données (SP13) depuis ledit dispositif de lecture/écriture sur ladite première carte à circuit intégré ; et à réaliser une authentification mutuelle (SP16) entre ladite première carte à circuit intégré et ladite seconde carte à circuit intégré, en transférant les données (SP18) depuis ladite première mémoire sur ladite seconde mémoire.
  14. Procédé de communication de données selon la revendication 1, dans lequel ladite première carte à circuit intégré comporte un générateur de puissance électrique (14A), un circuit de modulation/démodulation (15A) et un séquenceur (19A) dont chacun est connecté à ladite première antenne ; et ladite seconde carte à circuit intégré comporte un générateur de puissance électrique (14B), un circuit de modulation/démodulation (15B) et un séquenceur (19B) dont chacun est connecté à ladite seconde antenne.
EP01116057A 2000-07-10 2001-07-02 Méthode de communication pour carte à puce Expired - Lifetime EP1172754B1 (fr)

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JP2000213383A JP4501241B2 (ja) 2000-07-10 2000-07-10 Ｉｃカード及びｉｃカードのデータ通信方法

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JP2002024778A (ja) 2002-01-25
EP1172754A1 (fr) 2002-01-16
DE60105905D1 (de) 2004-11-04
DE60105905T2 (de) 2005-10-06
US20020014529A1 (en) 2002-02-07
US6659343B2 (en) 2003-12-09
JP4501241B2 (ja) 2010-07-14

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